Introduction. Low anterior resection of the rectum (LAR) is a treatment of choice in patients with diagnosed low rectal cancer. Rectal cancer surgery has a close relationship with the urinary-sexual organs and also with related nerves and nerve plexus. Thus, the sympathetic and parasympathetic nerves of the pelvic area may be damaged. As a result of this, the important point is the sexual function loss following rectal surgeries. The aim of the study was to investigate the sexual disorders in patients with rectal cancer who underwent LAR. Materials and methods. In this retrospective study the sexual activity, comfort of the experience, quality of sexual life (QoSL) during 3 periods were analyzed: before surgery, a month after and half a year after surgery. Analysis of demographic characteristics, comorbidities, previous surgeries, toumor characteristics and adjuvant therapy as was performed. Results. Most patients (64/100, 64%) expressed that LAR operation has strongly affected their QoSL, 32 patients reported the mild decrease in QoSL, while only 4 patients stated that did not experience any changes in QoSL. QoSL was assessed in 3 different periods of time: before the operation, 1 month after and 6 months after the operation (22,6±3.7 vs. 11.3±7,9 vs. 17,0±6.3; p<0.0001 respectively). The decreased QoSL one and six months after the surgery were significantly lower in patients with diagnosed hypertension and higher BMI (p=0.0283). Conclusions. Sexual disorders after LAR for rectal cancer are often underestimated and it is very important to be aware of them. In our study, it was determined that male sex, higher BMI and hypertension are related to impair of sexual dysfunction after LAR. We observed that the most severe complaints related to sexual activity occur one month after the procedure, after 6 months in most of the patients' sexual disorders were decreased approaching the initial state.
The aim of the study was to assess the influence of neoadjuvant radiotherapy and resection of the rectum on the functional parameters of anal sphincters.Material and methods. 20 patients with rectal cancer, qualified for low anterior rectal resection with neoadjuvant radiotherapy were enrolled in the study group. The study protocol included an anorectal manometry, electromyography and fecal incontinence questionnaire (FISI) before radiotherapy, after radiotherapy, and after the operation.Results. Of the 20 patients 12 were included in the final analysis, because 8 patients were re-qualified to abdomino-perineal resection of the rectum after neoadjuvant treatment. There were no significant changes in anal pressures assessed 5 to 8 days after radiotherapy. In 3 cases (25%) pathological changes in RAIR reflex were found in the manometric examination. After low anterior resection mean basal anal pressures were significantly lower, whereas squeeze anal pressures did not change significantly. In 7 patients (58%) the RAIR reflex was pathological or even absent after low anterior resection. Changes in manometric parameters correlated with FISI incontinence assessment after the operation. In electromyographic examination action potentials of motoric units of the external anal sphincter were still present both after radiotherapy, and after operation.Conclusions. Fecal incontinence after low anterior resection of the rectum seems to be caused mostly by changes in autonomic functionality of anal sphincters and lack of compliance of the neorectum, since the influence of neoadjuvant radiotherapy and the operation itself on the somatic innervation of anal sphincters seems to be minimal.
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